Bradysia luctifica (Skuse, 1888)

Vilkamaa, Pekka & Suuronen, Anna, 2019, Definition of the Bradysia luctifica group (Diptera, Sciaridae), with the description of five new species, Zootaxa 4576 (1), pp. 151-161 : 152

Key to species of the Bradysia luctifica group

1 Gonostylus with large dorsal lobe with megasetae.............................................. B. robusta Mohrig

- Gonostylus without large lobe............................................................................ 2

2 Colour dark brown, tegmen without hyalinous apicodorsal part, hypopygium basally with sclerotized medial stripe.................................................................................................. B. torosa sp. n.

- Colour not especially dark brown, tegmen with hyalinous apicodorsal part, hypopygium basally without sclerotized medial stripe............................................................................................... 3

3 Maxillary palpus normal, with narrow, rather long segments.................................................... 4

- Maxillary palpus with large 1 st segment and small 2 nd and 3 rd segments............................................ 5

4 Gonostylus very strongly narrowed towards apex, at its widest about 3x as wide as at its narrowest, tegmen with membraneous lateral curvature, short apicodorsal hyalinous process and broad, nearly straight, nearly perpendicular basal apodemes.............................................................................................. B. calicula sp. n.

- Gonostylus less strongly narrowed towards apex, at its widest about 2x as wide as at its narrowest, tegmen without membraneous lateral curvature, with large apicodorsal hyalinous process and narrow, curved, oblique basal apodemes.................................................................................................... B. luctifica (Skuse)

5 Gonostylus slightly curved, tegmen with small apicodorsal hyalinous process, setae of basal antennal flagellomeres longer than width of flagellomeres................................................................ B. fornicata sp. n.

- Gonostylus strongly curved, tegmen with large apicodorsal hyalinous process, setae of basal antennal flagellomeres shorter than width of flagellomeres.............................................................................. 6

6 Gonostylus evenly narrow, with small apical lobe with megasetae, tegmen straight laterally.............. B. abrupta sp. n.

- Gonostylus widened towards apex, without apical lobe, megasetae in a subapical dorsal row, tegmen curved laterally.............................................................................................. B. conflexa sp. n.